Why sfml does not play the file inside a function in this python code?
cheirasacan at gmail.com
cheirasacan at gmail.com
Tue May 7 16:02:00 EDT 2013
El martes, 7 de mayo de 2013 16:57:59 UTC+2, MRAB escribió:
> On 07/05/2013 14:56, cheirasacan at gmail.com wrote:
>
> > El martes, 7 de mayo de 2013 12:53:25 UTC+2, MRAB escribió:
>
> >> On 07/05/2013 10:27, cheirasacan at gmail.com wrote:
>
> >> > from tkinter import *
>
> >> > import sfml
>
> >> >
>
> >> > window = Tk()
>
> >> > window.minsize( 640, 480 )
>
> >> >
>
> >> > def sonido():
>
> >> > file = sfml.Music.from_file('poco.ogg')
>
> >> > file.play()
>
> >> >
>
> >> > test = Button ( window, text = 'Sound test', command=sonido )
>
> >> > test.place ( x = 10, y = 60)
>
> >> >
>
> >> > window.mainloop()
>
> >> >
>
> >> > Using Windows 7, Python 3.3, sfml 1.3.0 library, the file it is played if i put it out of the function. � what am i doing wrong ? Thanks.
>
> >> >
>
> >>
>
> >> Perhaps what's happening is that sonido starts playing it and then
>
> >> returns, meaning that there's no longer a reference to it ('file' is
>
> >> local to the function), so it's collected by the garbage collector.
>
> >>
>
> >> If that's the case, try keeping a reference to it, perhaps by making
>
> >> 'file' global (in a simple program like this one, using global should
>
> >> be OK).
>
> >
>
> > Thanks. A global use of 'sonido' fix the problem. The garbage collector must be the point. But this code is part of a longer project. What can i do to fix it without the use of globals? I will use more functions like this, and i would like to keep learning python as well good programming methodology.
>
> > Thanks.
>
> >
>
> Presumably the details of the window are (or will be) hidden away in a
>
> class, so you could make 'file' an attribute of an instance.
>
>
>
> Also, please read this:
>
>
>
> http://wiki.python.org/moin/GoogleGroupsPython
>
>
>
> because gmail insists on adding extra linebreaks, which can be somewhat
>
> annoying.
The reply is very useful. I will keep learning.
Thanks for all.
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